EP1847707B1 - Betätigungssystem für zwei mobile Hauben eines Schubumkehrers, und mit einem solchen System versehener Schubumkehrer - Google Patents

Betätigungssystem für zwei mobile Hauben eines Schubumkehrers, und mit einem solchen System versehener Schubumkehrer Download PDF

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Publication number
EP1847707B1
EP1847707B1 EP07015678A EP07015678A EP1847707B1 EP 1847707 B1 EP1847707 B1 EP 1847707B1 EP 07015678 A EP07015678 A EP 07015678A EP 07015678 A EP07015678 A EP 07015678A EP 1847707 B1 EP1847707 B1 EP 1847707B1
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EP
European Patent Office
Prior art keywords
thrust reverser
motor
electric motor
speed
flexible transmission
Prior art date
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Active
Application number
EP07015678A
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English (en)
French (fr)
Other versions
EP1847707A3 (de
EP1847707A2 (de
Inventor
Michel Philippe Dehu
Fabrice Henri Emile Metezeau
Pierre André Marcel Baudu
Vincent Le Coq
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Nacelles SAS
Original Assignee
Aircelle SA
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Filing date
Publication date
Application filed by Aircelle SA filed Critical Aircelle SA
Publication of EP1847707A2 publication Critical patent/EP1847707A2/de
Publication of EP1847707A3 publication Critical patent/EP1847707A3/de
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Publication of EP1847707B1 publication Critical patent/EP1847707B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/76—Control or regulation of thrust reversers
    • F02K1/763—Control or regulation of thrust reversers with actuating systems or actuating devices; Arrangement of actuators for thrust reversers

Definitions

  • the present invention relates to a system for actuating two movable covers of a thrust reverser, and to a thrust reverser equipped with such a system.
  • the role of a thrust reverser during the landing of an aircraft is to improve the braking capacity of an aircraft by redirecting forward at least a portion of the thrust generated by the turbojet engine.
  • the inverter obstructs the gas ejection nozzle and directs the ejection flow of the engine towards the front of the nacelle, thereby generating a counter-thrust which is added to the braking of the wheels of the engine. the plane.
  • the structure of an inverter comprises movable covers movable between, on the one hand, an extended position in which they open in the nacelle a passage intended for the deflected flow, and on the other hand, a position retraction in which they close this passage.
  • These mobile hoods may furthermore perform a deflection function or simply the activation of other deflection means.
  • the movable hoods slide along rails so that when backing up during the opening phase, they discover deflection vane grids arranged in the thickness of the nacelle .
  • a linkage system connects the movable hood to blocking doors that expand within the ejection channel and block the output in direct flow.
  • each movable hood pivots so as to block the flow and deflect it and is therefore active in this reorientation.
  • these mobile covers are actuated by hydraulic or pneumatic cylinders which require a network for transporting a fluid under pressure.
  • This fluid under pressure is conventionally obtained either by tapping air on the turbojet engine in the case of a pneumatic system or by sampling from the hydraulic circuit of the aircraft.
  • such systems require significant maintenance because the slightest leak in the hydraulic or pneumatic network can have damaging consequences both on the inverter and on other parts of the nacelle.
  • the establishment and protection of such a circuit are particularly delicate and cumbersome.
  • FR 2537236 discloses a system for actuating two movable covers of a thrust reverser according to the preamble of claim 1.
  • the present invention is intended in particular to provide a particularly reliable arrangement of such electromechanical actuators.
  • said motor is electric.
  • said electric motor is an autopilot synchronous motor: such a motor is particularly well suited to the invention because it is able to receive a torque command or speed.
  • the present invention also relates to a thrust reverser equipped with a system according to the above.
  • inverter comprising movable covers sliding along rails
  • the invention can be implemented with inverters of different design, including doors.
  • principle of the speed limitation at the beginning of the opening of the movable covers can be applied to any kind of actuating motor of the movable covers, an electric motor being only easier to control.
  • the figure 1 shows a partial schematic view of a nacelle incorporating a thrust reverser 1.
  • the turbojet engine is not shown.
  • This thrust reverser 1 has a structure comprising two semicircular movable hoods 2 capable of sliding along rails (not visible) to discover deflection vane grids 3 placed between the moving hoods 2 and a passage section of the flow air 4 to deflect.
  • Locking doors 5 are arranged inside the structure so as to be pivotable and move from a position in which they do not interfere with the passage of the air flow 4 to a position in which they block this passage.
  • the displacement of the mobile covers 2 on the rails along the outside of the structure is ensured by a set of jacks 6a, 6b mounted on a front frame with inside which are housed an electric motor 7 and flexible transmission shafts 8a, 8b respectively connected to the cylinders 6a, 6b to actuate.
  • Each movable cowl 2 can be translated along its rails under the action of three jacks 6a, 6b, comprising a central jack 6a and two additional jacks 6b, actuated by a single electric motor 7 connected to a control interface 9.
  • the power delivered by the electric motor 7 is first distributed to the central cylinders 6a through two flexible transmission shafts 8a, then to the additional cylinders 6b by flexible transmission shafts 8b.
  • An autopilot synchronous motor is an electric motor 7 particularly well adapted to a method according to the invention as able to receive a torque or speed control. Its operation is based on the interaction between a rotor magnetic field and a rotating stator magnetic field.
  • a sensor detects the exact position of the rotor and allows a frequency converter to maintain an angle between the rotor and the stator rotating field equal to 90 ° so that the engine torque is always maximum.
  • a modulation of the amplitude of the stator rotating field sets the value of the motor torque.
  • the sensor also provides information on the speed of rotation of the electric motor 7.
  • FIG. figure 3 A diagram showing the steps of a control method of the system according to the invention for the opening in normal condition of the thrust reverser 1 is shown in FIG. figure 3 .
  • the order 100 is given by the driver to deploy the inverter.
  • the electric motor 7 is activated during a step 101 which sets a torque reference of 10 Nm for example. Then follows a determined opening sequence causing the opening of the movable covers 2.
  • the sequence also comprises two test substeps 103, 104 forming a step of clamping the electric motor 7, consisting of regularly analyzing respectively the displacement of the moving cowl 2 and the speed of rotation of the electric motor 7.
  • the test step 104 is applied, otherwise the opening sequence continues normally until its end , when the mobile hood is fully open.
  • the analysis of the displacement of the movable covers 2 thus makes it possible to apply the speed limitation only at the beginning of opening.
  • the displacement of the moving cowls 2 is obtained by means of a resolver terminating the flexible transmission shaft 8a and making it possible to count the number of turns made by the latter.
  • other means are quite possible.
  • the test step 104 therefore analyzes the rotational speed of the electric motor 7, representative of the opening speed of the movable cowl 2. If the rotation speed of the electric motor 7 is greater than the predetermined limit speed, then an order 105 sets a lower torque setpoint to the electric motor 7. By decreasing the torque delivered by the electric motor 7 while the loads to be overcome remain constant, its speed also decreases.
  • step 104 Once this test step 104 is completed and possibly a new fixed torque setpoint, the process resumes the opening sequence until its completion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Control Of Turbines (AREA)
  • Body Structure For Vehicles (AREA)

Claims (7)

  1. Betätigungssystem für zwei mobile Hauben (2) eines Schubumkehrers (1), umfassend:
    - für jede Haube (2), einen zentralen Zylinder (6a) und zwei zusätzliche Zylinder (6b),
    - einen Motor (7) und
    - flexible Übertragungswellen (8a), die zwischen dem Motor (7) und den zentralen Zylindern (6a) angebracht sind; gekennzeichnet durch flexible Übertragungswellen (8b), die zwischen jedem zentralen Zylinder (6a) und seinen zwei assoziierten zusätzlichen Zylindern (6b) angebracht sind.
  2. System nach Anspruch 1, wobei der Motor (7) elektrisch ist.
  3. System nach Anspruch 2, wobei der elektrische Motor (7) ein selbstgesteuerter synchroner Motor ist.
  4. System nach einem der Ansprüche 1 bis 3, umfassend außerdem Mittel, um die Geschwindigkeit der Hauben (2) am Beginn ihrer Öffnungsphase zu begrenzen.
  5. System nach Anspruch 4, dadurch gekennzeichnet, dass die Mittel zur Begrenzung der Geschwindigkeit eine Steuerschnittstelle (9) umfassen und Mittel, um die Anzahl der Umdrehungen zu zählen, die von einer der flexiblen Übertragungswellen (8a), die mit dem Motor (7) verbunden sind, durchgeführt werden.
  6. System nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel zur Zählung der Umdrehungen einen Resolver umfassen.
  7. Schubumkehrer (1), ausgestattet mit einem System gemäß einem der vorhergehenden Ansprüche.
EP07015678A 2004-06-29 2005-06-09 Betätigungssystem für zwei mobile Hauben eines Schubumkehrers, und mit einem solchen System versehener Schubumkehrer Active EP1847707B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0407096A FR2872222B1 (fr) 2004-06-29 2004-06-29 Procede d'ouverture d'un capot mobile equipant un inverseur de poussee
EP05775396A EP1771648B1 (de) 2004-06-29 2005-06-09 Verfahren zum öffnen einer mobilen haube eines schubumkehrers

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP05775396.4 Division 2005-06-09
EP05775396A Division EP1771648B1 (de) 2004-06-29 2005-06-09 Verfahren zum öffnen einer mobilen haube eines schubumkehrers

Publications (3)

Publication Number Publication Date
EP1847707A2 EP1847707A2 (de) 2007-10-24
EP1847707A3 EP1847707A3 (de) 2012-05-09
EP1847707B1 true EP1847707B1 (de) 2012-11-28

Family

ID=34947182

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05775396A Active EP1771648B1 (de) 2004-06-29 2005-06-09 Verfahren zum öffnen einer mobilen haube eines schubumkehrers
EP07015678A Active EP1847707B1 (de) 2004-06-29 2005-06-09 Betätigungssystem für zwei mobile Hauben eines Schubumkehrers, und mit einem solchen System versehener Schubumkehrer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05775396A Active EP1771648B1 (de) 2004-06-29 2005-06-09 Verfahren zum öffnen einer mobilen haube eines schubumkehrers

Country Status (7)

Country Link
US (1) US7562520B2 (de)
EP (2) EP1771648B1 (de)
CA (1) CA2565713C (de)
DE (1) DE602005002372T2 (de)
ES (2) ES2397114T3 (de)
FR (1) FR2872222B1 (de)
WO (1) WO2006010803A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887301B1 (fr) * 2005-06-16 2007-08-31 Aircelle Sa Systeme de commande electronique pour nacelle
FR2912470B1 (fr) * 2007-02-14 2009-03-20 Aircelle Sa Procede de controle des moteurs electriques d'un inverseur de poussee
FR2913067B1 (fr) * 2007-02-28 2011-05-13 Aircelle Sa Procede d'autocalibration pour verins electriques de nacelle de turboreacteur
FR2922958B1 (fr) * 2007-10-25 2009-11-20 Aircelle Sa Inverseur de poussee a grilles
FR2927309B1 (fr) 2008-02-13 2010-04-16 Aircelle Sa Systeme de commande pour nacelle de turboreacteur
FR2944563B1 (fr) * 2009-04-16 2011-04-22 Aircelle Sa Dispositif d'inversion de poussee

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458582A (en) * 1982-10-18 1984-07-10 Sundstrand Corporation Automatic rigging arrangement for actuation systems
FR2755730B1 (fr) * 1996-11-14 1999-01-08 Hispano Suiza Sa Systeme de commande electrique pour inverseur de poussee de turboreacteur
US6519929B2 (en) * 2001-04-30 2003-02-18 Honeywell International, Inc. System and method for controlling the deployment of jet engine thrust reversers
US6526744B2 (en) * 2001-04-30 2003-03-04 Honeywell International Inc. System and method for controlling the stowage of jet engine thrust reversers

Also Published As

Publication number Publication date
US20070220861A1 (en) 2007-09-27
DE602005002372T2 (de) 2008-01-03
EP1771648B1 (de) 2007-09-05
CA2565713A1 (fr) 2006-02-02
EP1771648A1 (de) 2007-04-11
CA2565713C (fr) 2009-03-17
EP1847707A3 (de) 2012-05-09
WO2006010803A1 (fr) 2006-02-02
ES2293597T3 (es) 2008-03-16
FR2872222B1 (fr) 2006-08-25
DE602005002372D1 (de) 2007-10-18
US7562520B2 (en) 2009-07-21
EP1847707A2 (de) 2007-10-24
ES2397114T3 (es) 2013-03-04
FR2872222A1 (fr) 2005-12-30

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